North Korea has successfully tested The Hydrogen Bomb.

North Korea says it has successfully carried out a hydrogen bomb test, which if confirmed, will be a first for the reclusive regime and a significant advancement for its military ambitions.
A hydrogen bomb is more powerful than plutonium weapons, which is what North Korea used in its three previous underground nuclear tests.
"If there's no invasion on our sovereignty we will not use nuclear weapon," the North Korean state news agency said. "This H-bomb test brings us to a higher level of nuclear power."
A senior U.S. administration told CNN it could take days to obtain the scientific data to determine whether this was a successful test.
The South Korean defense ministry said it too could not immediately confirm the test's success, but the country's foreign ministry hastily convened an emergency meeting. Officials in Japan were also holding discussions.
The test took place at 10 a.m. local time, the regime said in a televised statement.
The seismic event, which measured the event at a magnitude of 5.1, occurred 19 kilometers (12 miles) east-northeast of Sungjibaegam, the United States Geological Survey said.

In the past, North Korea has tested fission weapons, which break large atoms like plutonium, into smaller atoms, creating considerable energy.
Fusion weapons, such as hydrogen bombs, use fusion to combine small atoms -- such as hydrogen -- to create much larger amounts of energy.
Nuclear weapons based on fission typically have a yield of around 10 kilotons, while nuclear weapons employing fusion can have a yield measured in megatons.
A hydrogen bomb is hundreds of times more powerful than the atomic bomb that devastated Hiroshima in 1945.
The North Koreans have signaled for some time the test was a possibility, said Mike Chinoy, with the U.S.-China Institute at the University of Southern California.

"Kim Jong Un made public statement a few weeks ago saying that (the country was) developing a hydrogen bomb."

"North Korea appears to have had a difficult time mastering even the basics of a fission weapon," he said. "This suggests that unless North Korea has had help from outside experts, it is unlikely that it has really achieved a hydrogen/fusion bomb since its last nuclear test, just short of three years ago."

THE WORLD REACTS TO NORTH KOREA'S CLAIM

The international community on Wednesday condemned North Korea's announcement that it conducted a successful hydrogen bomb test.
The United Nations Security Council plans to hold an emergency meeting later on the reported test.

Chinese Foreign Ministry spokeswoman Hua Chunying speaks during a briefing at the Chinese Foreign Ministry in Beijing, China, Wednesday, Jan. 6, 2016.
If confirmed, the test would mark another big step toward Pyongyang's goal of building a warhead that can be mounted on a missile capable of reaching the U.S. mainland.

South Korean President Park Geun-hye called for a swift, accurate analysis of the North's claim.

"It's not only grave provocation of our national security, but also an act that threatens our lives and future. It's also a direct challenge to world peace and stability," she said.
Ned Price, the spokesman for the National Security Council, said: "While we cannot confirm these claims at this time, we condemn any violation of U.N. Security Council resolutions and again call on North Korea to abide by its international obligations and commitments.
"We have consistently made clear that we will not accept it as a nuclear state. We will continue to protect and defend our allies in the region, including the Republic of Korea, and will respond appropriately to any and all North Korean provocations."

Caroline Kennedy, the U.S. Ambassador to Japan, said she and Japan's Foreign Minister Fumio Kishida condemned any violation of the U.N. Security Council resolutions.
"We stand with Japan and our other allies in solidarity against North Korean provocations, and we will work closely with them in the coming days," she said.

Japan's Prime Minister Shinzo Abe said the test represents a threat to Japanese security and is "totally intolerable," Kyodo News Service reported.

China, North Korea's main ally, said it "firmly opposes" the test, according to the official Xinhua agency.
"China is steadfast in its position that the Korean Peninsula should be denuclearized and nuclear proliferation be prevented to maintain peace and stability in Northeast Asia," Foreign Ministry spokesperson Hua Chunying said, according to Xinhua.
"We strongly urge (North Korea) to honor its commitment to denuclearization, and to cease any action that may deteriorate the situation," she added.
British Foreign Secretary Philip Hammond, who is currently visiting China, said he and his Chinese counterpart Yang Jiechi agreed to work with other members of the U.N. Security Council toward "a robust international response."

"If a nuclear device has been detonated by North Korea, this is a grave breach of UN Security Council resolutions and a provocation which I condemn without reservation," he said.

Australian Foreign Minister Julie Bishop said the test "confirms North Korea's status as a rogue state and a continuing threat to international peace and security."

French President Francois Hollande added: "France condemns this unacceptable violation of Security Council resolutions and calls for a strong reaction from the international community."